KR20190077971A - Appratus for forming pattern on surface of roll and metal plate manufacturing method - Google Patents

Abstract

Disclosed are a roll pattern forming apparatus and a method for manufacturing a metal plate. According to an embodiment of the present invention, the roll pattern forming apparatus can comprise: a laser irradiation unit making an oscillating laser as a plurality of pattern forming lasers each having a predetermined interval, and irradiating the lasers to at least a portion of a rotating roll surface to form a predetermined pattern on the roll surface; and a transfer unit allowing the laser irradiation unit to move in the longitudinal direction of the roll.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a roll surface pattern forming apparatus,

The present invention relates to a roll surface pattern forming apparatus for forming a predetermined pattern on a roll surface and a metal plate manufacturing method for forming a metal plate on which a predetermined pattern is formed by using a roll having a predetermined pattern.

A predetermined pattern may be formed on a metal plate such as a steel plate. For example, a hairline pattern may be formed on the metal plate to prevent the reflection of light and the beauty.

In order to form a predetermined pattern on the metal plate, a predetermined pattern is formed on the surface of the roll used for making the metal plate.

Conventionally, in order to form a predetermined pattern on the surface of a roll, a grinding stone, an abrasive belt or the like is used, or a plurality of projections are formed on the surface of the roll. In such a conventional case, it is difficult to control the length and shape of the pattern formed on the roll surface, and when the pattern is formed on the metal plate by the roll having the pattern formed on the surface, shock or meandering occurs.

In addition, conventionally, a passive film is damaged by forming a pattern on a metal plate with a roll having a pattern formed on its surface in a state where a passive film is formed by heat treatment of the metal plate. As a result, the corrosion resistance of the metal plate was deteriorated.

Korean Registered Patent No. 1663772 (issued October 10, 2016)

The present invention is realized by recognizing at least any one of the above-mentioned conventional needs or problems.

It is an object of the present invention to provide a method for forming a predetermined pattern on a roll surface by a plurality of pattern forming lasers at predetermined intervals and forming a predetermined pattern on a metal plate by a roll having a predetermined pattern formed on a surface thereof, So as not to deteriorate.

A roll surface pattern forming apparatus and a metal plate manufacturing method according to an embodiment for realizing at least one of the above problems may include the following features.

The apparatus for forming a roll surface pattern according to an embodiment of the present invention includes a plurality of pattern forming lasers each having an oscillated laser at a predetermined interval and irradiating at least a part of the rotating roll surface to form a predetermined pattern on the roll surface A laser irradiating unit for irradiating the laser beam; And a transfer unit for causing the laser irradiation unit to move in the longitudinal direction of the roll; . ≪ / RTI >

In this case, the laser irradiation unit may include a laser oscillator for oscillating a laser, and a laser diverging lens for diverging a plurality of laser beams emitted from the laser oscillator to a plurality of pattern forming lasers having a predetermined distance therebetween.

Further, the laser diverging lens may have an uneven surface so that the incident laser may be diffracted and branched into a plurality of laser beams.

The laser irradiation unit may further include a collimator lens disposed between the laser oscillator and the laser diverging lens, the collimator lens preventing diffusion of the laser oscillated by the laser oscillator.

In addition, it is possible to control the intervals of the patterns formed on the roll surface by adjusting the irradiation angles of the plurality of pattern forming lasers irradiated by the laser irradiation unit.

The laser irradiation unit is rotatably provided in the transfer unit, and the irradiation angle of the plurality of pattern forming lasers irradiated by the laser irradiation unit can be adjusted by rotation of the laser irradiation unit of the laser irradiation unit.

Also, the length of the pattern formed on the surface of the roll can be adjusted by turning on and off the laser oscillator included in the laser irradiation unit.

A method of manufacturing a metal plate according to an embodiment of the present invention includes: a rolling step of rolling a slab or a metal plate into a metal plate having a predetermined width and thickness; A pattern forming step of forming a predetermined pattern on a metal plate having a predetermined width and thickness with a roll having a predetermined pattern formed on its surface; And a heat treatment step of heat-treating the metal plate on which the predetermined pattern is formed; . ≪ / RTI >

In this case, in the pattern formation step, a predetermined pattern can be formed on a metal plate having a predetermined width and thickness by a roll having a predetermined pattern formed on its surface by the above-described roll surface pattern forming apparatus.

A hairline pattern may be formed on the roll surface by the roll surface pattern forming apparatus.

In the rolling step, a slab or a metal plate is rolled by a plurality of rolling mills to form a metal plate having a predetermined width and thickness. The roll having a predetermined pattern formed on the surface thereof is placed in a rolling mill And a predetermined pattern can be formed on a metal plate having a predetermined width and thickness by the work roll having a predetermined pattern formed on its surface in the pattern formation step.

In the rolling step, the slab or the metal plate is rolled several times in one rolling machine to form a metal plate having a predetermined width and thickness. In the pattern forming step, a predetermined pattern is formed on the surface in the last rolling of the slab or the metal plate by the rolling machine The formed roll may be replaced with a work roll of the rolling mill to form a predetermined pattern on a metal plate having a predetermined width and thickness.

In the heat treatment step, the metal plate on which the predetermined pattern is formed may be subjected to annealing heat treatment or brass annealing heat treatment.

As described above, according to the embodiment of the present invention, even when a predetermined pattern is formed on a roll surface by a plurality of pattern forming lasers at predetermined intervals and a predetermined pattern is formed on the metal plate by a roll having a predetermined pattern formed on the surface The corrosion resistance of the metal sheet can be improved without deteriorating.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing an embodiment of a roll surface pattern forming apparatus according to the present invention and thereby forming a pattern on a roll surface. Fig.
Fig. 2 is a diagram showing the configuration of a laser irradiation unit and its operation in an embodiment of the apparatus for forming a roll surface pattern according to the present invention.
3 is a view showing an embodiment of a method for manufacturing a metal plate according to the present invention.
4 is a view showing a process to which an embodiment of the method for manufacturing a metal plate according to the present invention is applied.

In order to facilitate understanding of the features of the present invention, a roll surface pattern forming apparatus and a method of manufacturing a metal plate according to embodiments of the present invention will be described in detail.

The embodiments described below will be described on the basis of embodiments best suited to understand the technical characteristics of the present invention and the technical features of the present invention are not limited by the embodiments described, It is to be understood that the invention can be practiced with embodiments. Therefore, it is intended that the present invention covers the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents. In order to facilitate the understanding of the embodiments described below, in the reference numerals shown in the accompanying drawings, among the constituent elements that perform the same function in the respective embodiments, the related constituent elements are indicated by the same or an extension line number.

Roll surface pattern forming device

Hereinafter, an apparatus for forming a roll surface pattern according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG.

FIG. 1 is a view showing an embodiment of the apparatus for forming a roll surface pattern according to the present invention and thereby forming a pattern on the surface of the roll. FIG. 2 is a cross- And the operation thereof.

One embodiment of the apparatus 100 for forming a roll surface pattern according to the present invention may include a laser irradiation unit 200 and a transfer unit 300.

As shown in FIG. 2, the laser irradiating unit 200 may be made of a plurality of pattern forming lasers having a predetermined interval from each other. The laser irradiation unit 200 can irradiate at least a part of the surface of the rotating roll RL as shown in Fig. 1, with a plurality of pattern forming lasers having a predetermined interval from each other.

Thereby, a predetermined pattern can be formed on the surface of the roll (RL). For example, a hairline pattern may be formed on the surface of the roll (RL). In this case, the interval of the hairline pattern may be several micrometers. However, the pattern formed on the surface of the roll RL by the laser irradiation unit 200 is not particularly limited, and any pattern can be formed.

On the other hand, the roll RL is rotatably supported by bearings (not shown) on both sides for rotation, and one end is connected to a motor (not shown) and rotated by driving of the motor.

And the roll RL on which a predetermined pattern is formed on the surface by the laser irradiation unit 200 may be a work roll of the rolling mill RM. For example, as shown in FIG. 4, the roll RL on which a predetermined pattern is formed on the surface by the laser irradiation unit 200 may be a rolling mill RM positioned last in the process direction among a plurality of rolling mills RM, May be a work roll (not shown) of a rolling mill RM further positioned after the rolling mill RM.

A slab (not shown) made in a potter (not shown) of a casting process (not shown) of a steelworks can be rolled through a plurality of rolling mills RM to become a metal plate. A predetermined pattern is formed on the metal plate by a work roll on which a predetermined pattern of a rolling mill RM positioned last in the plurality of rolling mills RM and a rolling mill RM located further after a plurality of rolling mills RM is formed Can be transferred.

However, the roll RL on which a predetermined pattern is formed on the surface by the laser irradiation unit 200 is not limited to the work roll of the rolling mill RM, but may be any roll RL.

The laser irradiation unit 200 may include a laser oscillator 210 and a laser diverging lens 220 as shown in FIG.

The laser oscillator 210 can oscillate the laser. The laser oscillator 210 is not particularly limited, and any known laser oscillator can be used as long as it can oscillate the laser.

The laser diverging lens 220 may be branched to a plurality of pattern forming lasers having a predetermined distance from each other.

For this purpose, the laser diverging lens 220 may be provided with an uneven surface 221 as shown in FIG. The two laser diverging lenses 220 having the uneven surface 221 can be positioned so that the uneven surfaces 221 face each other. In this state, when the laser oscillated by the laser oscillator 210 is incident on the laser diverging lens 220 as shown in FIG. 2, the optical path is diffracted as it passes the uneven surface 221 of the laser diverging lens 220 And can be branched into a plurality of pattern forming lasers having a predetermined spacing from each other.

The shape and the configuration of the uneven surface 221 of the laser diverging lens 220 are not particularly limited and the optical path of the laser incident on the laser diverging lens 220 is diffracted so that a plurality of pattern forming lasers Any shape and configuration that can be made is possible.

The laser irradiation unit 200 may further include a collimator lens 230. The collimator lens 230 may be provided between the laser oscillator 210 and the laser divergence lens 220 as shown in FIG. In addition, the collimator lens 230 can prevent the laser oscillated by the laser oscillator 210 from diffusing while proceeding. Accordingly, most of the laser emitted from the laser oscillator 210 can be incident on the laser branching lens 220.

On the other hand, the intervals of the patterns formed on the surface of the roll RL can be adjusted by controlling the irradiation angles of the plurality of pattern forming lasers irradiated by the laser irradiation unit 200. That is, the central pattern forming laser among the plurality of pattern forming lasers can be irradiated at a larger angle than the perpendicular angle or not at right angles to the surface of the roll (RL). Thereby, the interval of the patterns formed on the surface of the roll (RL) can be reduced as compared with when irradiated at right angles.

For this purpose, the laser irradiation unit 200 may be rotatably provided in the transfer unit 300. [ The irradiation angle of the plurality of pattern forming lasers irradiated by the laser irradiation unit 200 can be adjusted by the rotation of the laser irradiation unit 200 in the transfer unit 300.

For example, the laser irradiation unit 200 is provided in the transfer unit 300 and is movably provided in a later-described movement guide 310, which is located at a predetermined distance from the roll RL in the lengthwise direction of the roll RL And may be rotatably provided on the movable frame 320. The movable frame 320 may be provided with a rotation drive unit (not shown) including a rotation drive motor (not shown) for rotating the laser irradiation unit 200. By rotating the laser irradiation unit 200 in one direction or the other direction by the rotation drive unit, the irradiation angle of the plurality of pattern formation lasers irradiated by the laser irradiation unit 200 can be adjusted.

However, a configuration in which the laser irradiation unit 200 is rotatably provided in the transfer unit 300 and the laser irradiation unit 200 is rotated in the transfer unit 300 is not particularly limited, and any well-known configuration is possible.

On the other hand, the length of the pattern formed on the surface of the roll RL can be adjusted by turning on / off the laser oscillator 210 of the laser irradiation unit 200. A plurality of pattern forming lasers irradiated by the laser irradiation unit 200 and having a predetermined interval from each other can be irradiated onto the surface of the rotating roll RL. Therefore, by controlling the rotation speed of the roll RL and the ON / OFF state of the laser oscillator 210, a pattern of a predetermined desired length can be formed on the surface of the roll RL.

The transfer unit 300 can cause the laser irradiation unit 200 to move in the longitudinal direction of the roll RL. 1, the laser irradiation unit 200 irradiates the surface of the rotating roll RL from the laser irradiation unit 200 with a plurality of pattern forming lasers, 300 in the longitudinal direction of the roll RL. Thereby, a predetermined pattern can be formed on the entire surface of the roll (RL) or a desired portion of the surface of the roll (RL).

The transfer unit 300 may include a moving guide 310 and a moving frame 320 as shown in FIG. The movement guide 310 may be positioned at a predetermined distance from the roll RL in the longitudinal direction of the roll RL.

The moving frame 320 may be movably provided in the moving guide 310. [ For example, a rack gear 311 may be formed on one side of the movement guide 310 as shown in FIG. The movable frame 320 may be provided with a pinion gear (not shown) engaged with the rack gear 311. Further, the moving frame 320 may be provided with a moving driving unit (not shown) including a moving driving motor (not shown) connected to the pinion gear. By moving the pinion gear to one side or the other side by the driving of the moving driving motor of the moving driving unit, the moving frame 320 can move to one side or the other side along the moving guide 310. Accordingly, the laser irradiation unit 200 provided in the moving frame 320 can move to one side or the other side in the longitudinal direction of the roll RL.

The moving frame 320 may be provided with a laser irradiation unit 200. The laser irradiation unit 200 may be rotatably provided in the movable frame 320, for example, as described above.

However, the configuration of the transfer unit 300 is not particularly limited, and any known configuration can be used as far as the laser irradiation unit 200 is configured to move in the longitudinal direction of the roll RL.

Method of manufacturing metal plate

Hereinafter, a method of manufacturing a metal plate according to the present invention will be described with reference to FIGS. 3 and 4. FIG.

FIG. 3 is a view showing an embodiment of a method for manufacturing a metal plate according to the present invention, and FIG. 4 is a view showing a process to which an embodiment of a method for manufacturing a metal plate according to the present invention is applied.

An embodiment of the method for manufacturing a metal plate according to the present invention may include a rolling step (S100), a pattern forming step (S200) and a heat treatment step (S300) as shown in FIG.

In the rolling step (S100), a slab or a metal plate produced in the performance machine of the steel making process can be rolled to form a metal plate having a predetermined width and thickness. For example, a slab or a metal plate may be rolled through a plurality of rolling mills RM to become a metal plate having a predetermined width and thickness. In addition, although not shown in the rolling step S100, a slab or a metal plate may be rolled several times in one rolling mill RM to form a metal plate having a predetermined width and thickness.

In the pattern forming step S200, a predetermined pattern can be formed on a metal plate having a predetermined width and thickness by a roll RL having a predetermined pattern formed on its surface. In the pattern forming step S200, a predetermined pattern can be formed on a metal plate having a predetermined width and thickness by a roll RL having a predetermined pattern formed on its surface by the roll surface pattern forming apparatus 100 described above.

On the surface of the roll (RL), a hairline pattern may be formed by the roll surface pattern forming apparatus (100). Thus, the hair line pattern on the surface of the roll (RL) is transferred to the metal plate having a predetermined width and thickness, and a hair line pattern can be formed on the metal plate having a predetermined width and thickness. When a hair line pattern is formed on a metal plate having a predetermined width and thickness, the appearance of the metal plate is good and light is not reflected.

However, the predetermined pattern formed on the roll (RL) surface by the roll surface pattern forming apparatus 100 is not limited to the hairline pattern, and any pattern can be formed.

The roll RL having a predetermined pattern formed on its surface is positioned further downstream of the rolling mill RM or the plurality of mills RM located last in the process direction among the plurality of rolling mills RM as shown in FIG. It may be a work roll of a rolling mill RM. Thereby, the conventional rolling mill RM for the rolling step S100 or the pattern forming step S200 can be performed by adding only one rolling mill RM.

Therefore, in the pattern formation step (S200), a predetermined pattern can be formed on a metal plate having a predetermined width and thickness by a work roll of a rolling mill RM having a predetermined pattern formed on its surface.

On the other hand, when the slab or the metal plate is rolled several times in one rolling mill RM in the rolling step S100 to form a metal plate having a predetermined width and thickness, in the pattern forming step S200, A predetermined pattern can be formed on a metal plate having a predetermined width and thickness by replacing a roll (RL) having a predetermined pattern formed on its surface in the final rolling of the metal plate with a work roll of the rolling mill RM.

In the heat treatment step S300, the metal plate on which a predetermined pattern is formed can be heat-treated. For example, in the heat treatment step (S300), the metal plate on which the predetermined pattern is formed can be annealed. In addition, in the case where a beautiful surface is required, a metal plate on which a predetermined pattern is formed can be subjected to a brass annealing heat treatment in the heat treatment step (S300).

As described above, in one embodiment of the method for manufacturing a metal plate according to the present invention, a predetermined pattern is formed on a metal plate before the heat treatment of the metal plate. Therefore, a passive film can be formed by heat treatment on a predetermined pattern formed on the metal plate. Therefore, by forming a predetermined pattern on the metal plate as in the conventional metal plate manufacturing method of forming a predetermined pattern on the metal plate after heat-treating the metal plate, the passive film can be prevented from being damaged. have.

As described above, by using the apparatus for forming a roll surface pattern and the method for producing a metal plate according to the present invention, it is possible to form a predetermined pattern on a roll surface by a plurality of pattern forming lasers at predetermined intervals, Even if a predetermined pattern is formed on the metal plate, the corrosion resistance of the metal plate can be improved without deteriorating.

The roll surface pattern forming apparatus and the metal plate manufacturing method described above are not limited to the configurations of the embodiments described above, but the embodiments may be modified such that all or some of the embodiments are selectively And may be configured in combination.

100: Roll surface pattern forming apparatus 200: Laser irradiation unit
210: laser oscillator 220: laser branching lens
221: uneven surface 230: collimate lens
300: transfer unit 310: moving guide
311: Rack gear 320: Moving frame
RL: Roll RM: Rolling mill

Claims (13)

A laser irradiating unit for making a plurality of pattern forming lasers having oscillation lasers at predetermined intervals and irradiating at least a part of the rotating roll surface to form a predetermined pattern on the roll surface; And
A transfer unit for causing the laser irradiation unit to move in the longitudinal direction of the roll;
And the roll surface pattern forming device. The laser irradiation apparatus according to claim 1, wherein the laser irradiation unit comprises: a laser oscillator for oscillating a laser; and a laser diverging lens for diverging a laser beam emitted from the laser oscillator to a plurality of pattern forming laser Pattern forming apparatus. 3. The roll surface pattern forming apparatus according to claim 2, wherein the laser diverging lens has an uneven surface, and the incident laser is diffracted so as to be branched into a plurality of rolls. The apparatus as claimed in claim 3, wherein the laser irradiating unit further comprises a collimator lens provided between the laser oscillator and the laser diverging lens, the collimator lens preventing the laser oscillated by the laser oscillator from diffusing. The roll surface pattern forming apparatus according to claim 1, wherein an irradiation angle of a plurality of pattern forming lasers irradiated by the laser irradiation unit is adjusted to adjust the interval of patterns formed on the roll surface. 6. The apparatus according to claim 5, wherein the laser irradiation unit is rotatably provided in the transfer unit,
And the irradiation angle of the plurality of pattern forming lasers irradiated by the laser irradiation unit is adjusted by rotation of the laser irradiation unit in the transfer unit. The roll surface pattern forming apparatus according to claim 1, wherein a length of a pattern formed on the roll surface is adjusted by turning on and off a laser oscillator included in the laser irradiation unit. A rolling step of rolling a slab or a metal plate into a metal plate having a predetermined width and thickness;
A pattern forming step of forming a predetermined pattern on a metal plate having a predetermined width and thickness with a roll having a predetermined pattern formed on its surface; And
A heat treatment step of heat-treating a metal plate on which a predetermined pattern is formed;
≪ / RTI > The pattern forming method according to claim 8, wherein in the pattern forming step, a predetermined pattern is formed on the surface by the roll surface pattern forming apparatus according to any one of claims 1 to 7, Of the metal plate. The method of manufacturing a metal plate according to claim 9, wherein a hairline pattern is formed on the roll surface by the roll surface pattern forming apparatus. 10. The method of claim 9, wherein in the rolling step, a slab or a metal plate is rolled by a plurality of rolling mills to form a metal plate having a predetermined width and thickness,
The roll having a predetermined pattern formed on the surface thereof is a work roll of a rolling mill positioned finally in the process direction among a plurality of rolling mills or a rolling mill further positioned after a plurality of the rolling mills,
Wherein the pattern forming step forms a predetermined pattern on a metal plate having a predetermined width and thickness by the work roll having a predetermined pattern formed on its surface. The method as claimed in claim 9, wherein in the rolling step, the slab or the metal plate is rolled several times in one rolling machine to form a metal plate having a predetermined width and thickness,
In the pattern formation step, the roll having the predetermined pattern formed on the surface thereof in the last rolling of the slab or the metal plate by the rolling machine is replaced with a work roll of the rolling machine to produce a metal plate that forms a predetermined pattern on a metal plate having a predetermined width and thickness Way. The method of manufacturing a metal plate according to claim 8, wherein in the heat treatment step, the metal plate on which the predetermined pattern is formed is subjected to annealing or brass annealing.

Images